Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1881 1882 - 1918 1919 - 1928 1929 - 1985 1986 - 2000 unkempt English
1800 - 1820 1821 - 1861 1862 - 1867 1868 - 1922 1923 - 2000 kempt English

Run your own experiment! Raw data is available for download here.
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